Bush-hammer



(N0 MOdels') L. H. RWELL.

BUSH HAMMER. 110.396,174. A Patented Jan. 15, 1889.`

NiTED STATES' rricn.

ATENT BUSH-HAMMER.

SPECIFICATION forming part of Letters Iatent No. 396,174, dated January 15, 1889.

Application tiled March 22, 1888.

T0 a/ZZ 1071/071@ z'f may concern:

Be it known that l, LUTHER ll'. RowELL, of South Thomaston, in the county of Knox and State of Maine, have invented a new and Improved Bush-Hammer, of which the following is a full, clear, and exact description.

My invention relates to hammers for dressing stone, and has for its object to simplify the construction and impart greater strength and durability to the tools.

The invention consists in the construction and combination of the several parts, as will be hereinafter Yfully set t'orth, and pointed out in the claims.

Reference is to be had to the aceompanyin g drawings, forming a part of this specification, in which similar letters of reference indicate corresponding parts in all the .figures Figure l. is a perspective view of the hammer with wrench shown in its position by the dotted lines. Fig. 2 is a cross-section ot Fig. l. through the thimble and handle. Fig. 3 is a perspective view ot' a modified form of my invention, shown as used for peen-hammers. Fig. i is a section of Fig. 3 on the line c ce, Fig. 3; and Fig. 5 is an end view of the shanksections.

Bush-hammers as heretofore made consistot' a central body called the pole, through which is an eye for the handle, the pole being provided at its ends with channels for holding the cuts or chisels, a separate set of which are required at each end ot the pole, the cuts being held in place by bolts and nuts, usually four in number, two of which are passed through holes in the pole and cuts in each channel. The poles also require gibs or stays at the sides oi' the channels or seats to prevent lateral motion ot' the cu ts. The cuts so made are small and liable to break away at the bolt-holes and work loose in wear by rea son of the proximity of the holes to the ends of the cuts.

In my improvement I make use ot' two pole-plates and shank-sections integral with the plates, which sections are united by a sleeve, which forms a socket t'or the handle, and instead of using small cuts I make the cuts in' the form of long blades, each in one piece and extending through, between,

Serial No. 268,115. (No model.)

and beyond the pole-plates, the plates and cuts being secured together by transverse bolts, the. heads of which are partly received in square recesses or countcrsinks, as shown in Fig. 2, which hold the bolts from turning' and permit the bolts to be turned when one side becomes worn or tiattened.

The pole-plates B are fiat rectangularmetal plates, from each ot which extends medially t rom one side a substantially semi -cylindrical section, c, forming one-half of the shank D, which sections are correspondingly tapered and threaded at the outer end, at E, to receive the tapering internally-threaded sleeve or thimble, F, which sleeve, when screwed to place on the sections a, binds the saine firmly together an'd vprovides a socket to receive the end otf thehandle g. The plates B are provided on each end with two correspondingly and accurately spaced holes to receive the fastening-bolts c. The meeting' edges of the shanlcsections c are beveled, as shown most clearly in Fig'. 5, which construction forms a dovetail lock and prevents lateral movement ot the plates and cuts.

The cuts A, as shown in Fig. l,arevmade in the form of plates of greater length than the pole-plates, and are provided with holes corresponding with the holes in the plates.

In putting together the several parts one pole-plate is placed upon its outer face with the bolts in position therein, and the cuts in the desired number are placed on the bolts. The other plate is then put in place and the nuts pnt on the bolts. The sleeve is then screwed over the ends of the sections a, the handle inserted, and the nuts and sleeve tightened up. To facilitate turning the screw, a wrench, H, provided with a curved prong, 71., is provided, the end of the prong being inserted in an aperture, 7c, in the sleeve. This construction provides for the use ot.' a single heavy cut to form a poen-hammer, as shown at A in Figs. 3 and t. Feen-hammers as now constructed soon become worn at the edges; but with this construction by providing a new cut the hammer is made as good as new at but slight expense. Figs. 3 and 4; illustrate also a modiiication, in which a gib, L, is made integral with one plate and enters a slot, b, in

IOO

the other plate, which gib and slot are preterably dovetailed in forni, as shown. This forni is illustrated in use as a peeirliainnier, but is applicable for use with ents, especially lwhen intellded Yfor use in rough or heavy work.

Having' thus fully deseribed nl)Y invention, what I elaiin as new, and desire to seenre hy Letters Patent, is-

l. In alnlsh-haninier, the emnhination, with two liiole-lilates provided eaeh with spaced li0lti-holes and a shank-section tapered and tjillreaded at the outer end, otf a tapering,I threaded sleeve and t1stening-holts, snhstantiallyas shown and described.

In a hush-hanimer, a reetangnlar plate provided with a semi-cylindrieal shank-seetion tapered and threaded at its Outer end,

and with spaced holt-holes, sulistantially as i shown and deserihed.

3. The Combination, with two pole-plates formed with sliai1l -seetioi1s and provided with spaced holt-holes, of ents held between the plates, a sleeve engaging the shanleseetitiiis, and tasteni1i;-l olt's, snlistantiall)Y as shown and deserilniwl.

it. Alinsh-l'lannner pole eonlprising the separate and independent apertln'ed pole-plates, eaeh havin shank t'orniingI a hal tsoeket. en its inner edge, a transverse integral gil) extending inwardly from the entier edge of one plate, the outer edge ot' the oppositie plate havingl a transverse recess reeeivng' the end ot' said gil), and a sleeve surroundingI the twopart handle soeketn, snhstantiiallyas set torth.

LUTHER II. ROXVE'LIJ. lVitnesses.

J. O. RoiNsoN, A. lV. Simse'nv. 

